1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Renesas Technology Sales RTS7751R2D Support. 4 * 5 * Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd. 6 * Copyright (C) 2004 - 2007 Paul Mundt 7 */ 8 #include <linux/init.h> 9 #include <linux/platform_device.h> 10 #include <linux/mtd/mtd.h> 11 #include <linux/mtd/partitions.h> 12 #include <linux/mtd/physmap.h> 13 #include <linux/ata_platform.h> 14 #include <linux/sm501.h> 15 #include <linux/sm501-regs.h> 16 #include <linux/pm.h> 17 #include <linux/fb.h> 18 #include <linux/spi/spi.h> 19 #include <linux/spi/spi_bitbang.h> 20 #include <asm/machvec.h> 21 #include <mach/r2d.h> 22 #include <asm/io.h> 23 #include <asm/io_trapped.h> 24 #include <asm/spi.h> 25 26 static struct resource cf_ide_resources[] = { 27 [0] = { 28 .start = PA_AREA5_IO + 0x1000, 29 .end = PA_AREA5_IO + 0x1000 + 0x10 - 0x2, 30 .flags = IORESOURCE_MEM, 31 }, 32 [1] = { 33 .start = PA_AREA5_IO + 0x80c, 34 .end = PA_AREA5_IO + 0x80c, 35 .flags = IORESOURCE_MEM, 36 }, 37 #ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */ 38 [2] = { 39 .start = IRQ_CF_IDE, 40 .flags = IORESOURCE_IRQ, 41 }, 42 #endif 43 }; 44 45 static struct pata_platform_info pata_info = { 46 .ioport_shift = 1, 47 }; 48 49 static struct platform_device cf_ide_device = { 50 .name = "pata_platform", 51 .id = -1, 52 .num_resources = ARRAY_SIZE(cf_ide_resources), 53 .resource = cf_ide_resources, 54 .dev = { 55 .platform_data = &pata_info, 56 }, 57 }; 58 59 static struct spi_board_info spi_bus[] = { 60 { 61 .modalias = "rtc-r9701", 62 .max_speed_hz = 1000000, 63 .mode = SPI_MODE_3, 64 }, 65 }; 66 67 static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state) 68 { 69 BUG_ON(cs != 0); /* Single Epson RTC-9701JE attached on CS0 */ 70 __raw_writew(state == BITBANG_CS_ACTIVE, PA_RTCCE); 71 } 72 73 static struct sh_spi_info spi_info = { 74 .num_chipselect = 1, 75 .chip_select = r2d_chip_select, 76 }; 77 78 static struct resource spi_sh_sci_resources[] = { 79 { 80 .start = 0xffe00000, 81 .end = 0xffe0001f, 82 .flags = IORESOURCE_MEM, 83 }, 84 }; 85 86 static struct platform_device spi_sh_sci_device = { 87 .name = "spi_sh_sci", 88 .id = -1, 89 .num_resources = ARRAY_SIZE(spi_sh_sci_resources), 90 .resource = spi_sh_sci_resources, 91 .dev = { 92 .platform_data = &spi_info, 93 }, 94 }; 95 96 static struct resource heartbeat_resources[] = { 97 [0] = { 98 .start = PA_OUTPORT, 99 .end = PA_OUTPORT, 100 .flags = IORESOURCE_MEM, 101 }, 102 }; 103 104 static struct platform_device heartbeat_device = { 105 .name = "heartbeat", 106 .id = -1, 107 .num_resources = ARRAY_SIZE(heartbeat_resources), 108 .resource = heartbeat_resources, 109 }; 110 111 static struct resource sm501_resources[] = { 112 [0] = { 113 .start = 0x10000000, 114 .end = 0x13e00000 - 1, 115 .flags = IORESOURCE_MEM, 116 }, 117 [1] = { 118 .start = 0x13e00000, 119 .end = 0x13ffffff, 120 .flags = IORESOURCE_MEM, 121 }, 122 [2] = { 123 .start = IRQ_VOYAGER, 124 .flags = IORESOURCE_IRQ, 125 }, 126 }; 127 128 static struct fb_videomode sm501_default_mode = { 129 .pixclock = 35714, 130 .xres = 640, 131 .yres = 480, 132 .left_margin = 105, 133 .right_margin = 50, 134 .upper_margin = 35, 135 .lower_margin = 0, 136 .hsync_len = 96, 137 .vsync_len = 2, 138 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 139 }; 140 141 static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = { 142 .def_bpp = 16, 143 .def_mode = &sm501_default_mode, 144 .flags = SM501FB_FLAG_USE_INIT_MODE | 145 SM501FB_FLAG_USE_HWCURSOR | 146 SM501FB_FLAG_USE_HWACCEL | 147 SM501FB_FLAG_DISABLE_AT_EXIT, 148 }; 149 150 static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = { 151 .flags = (SM501FB_FLAG_USE_INIT_MODE | 152 SM501FB_FLAG_USE_HWCURSOR | 153 SM501FB_FLAG_USE_HWACCEL | 154 SM501FB_FLAG_DISABLE_AT_EXIT), 155 156 }; 157 158 static struct sm501_platdata_fb sm501_fb_pdata = { 159 .fb_route = SM501_FB_OWN, 160 .fb_crt = &sm501_pdata_fbsub_crt, 161 .fb_pnl = &sm501_pdata_fbsub_pnl, 162 .flags = SM501_FBPD_SWAP_FB_ENDIAN, 163 }; 164 165 static struct sm501_initdata sm501_initdata = { 166 .devices = SM501_USE_USB_HOST | SM501_USE_UART0, 167 }; 168 169 static struct sm501_platdata sm501_platform_data = { 170 .init = &sm501_initdata, 171 .fb = &sm501_fb_pdata, 172 }; 173 174 static struct platform_device sm501_device = { 175 .name = "sm501", 176 .id = -1, 177 .dev = { 178 .platform_data = &sm501_platform_data, 179 }, 180 .num_resources = ARRAY_SIZE(sm501_resources), 181 .resource = sm501_resources, 182 }; 183 184 static struct mtd_partition r2d_partitions[] = { 185 { 186 .name = "U-Boot", 187 .offset = 0x00000000, 188 .size = 0x00040000, 189 .mask_flags = MTD_WRITEABLE, 190 }, { 191 .name = "Environment", 192 .offset = MTDPART_OFS_NXTBLK, 193 .size = 0x00040000, 194 .mask_flags = MTD_WRITEABLE, 195 }, { 196 .name = "Kernel", 197 .offset = MTDPART_OFS_NXTBLK, 198 .size = 0x001c0000, 199 }, { 200 .name = "Flash_FS", 201 .offset = MTDPART_OFS_NXTBLK, 202 .size = MTDPART_SIZ_FULL, 203 } 204 }; 205 206 static struct physmap_flash_data flash_data = { 207 .width = 2, 208 .nr_parts = ARRAY_SIZE(r2d_partitions), 209 .parts = r2d_partitions, 210 }; 211 212 static struct resource flash_resource = { 213 .start = 0x00000000, 214 .end = 0x02000000, 215 .flags = IORESOURCE_MEM, 216 }; 217 218 static struct platform_device flash_device = { 219 .name = "physmap-flash", 220 .id = -1, 221 .resource = &flash_resource, 222 .num_resources = 1, 223 .dev = { 224 .platform_data = &flash_data, 225 }, 226 }; 227 228 static struct platform_device *rts7751r2d_devices[] __initdata = { 229 &sm501_device, 230 &heartbeat_device, 231 &spi_sh_sci_device, 232 }; 233 234 /* 235 * The CF is connected with a 16-bit bus where 8-bit operations are 236 * unsupported. The linux ata driver is however using 8-bit operations, so 237 * insert a trapped io filter to convert 8-bit operations into 16-bit. 238 */ 239 static struct trapped_io cf_trapped_io = { 240 .resource = cf_ide_resources, 241 .num_resources = 2, 242 .minimum_bus_width = 16, 243 }; 244 245 static int __init rts7751r2d_devices_setup(void) 246 { 247 if (register_trapped_io(&cf_trapped_io) == 0) 248 platform_device_register(&cf_ide_device); 249 250 if (mach_is_r2d_plus()) 251 platform_device_register(&flash_device); 252 253 spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus)); 254 255 return platform_add_devices(rts7751r2d_devices, 256 ARRAY_SIZE(rts7751r2d_devices)); 257 } 258 device_initcall(rts7751r2d_devices_setup); 259 260 static void rts7751r2d_power_off(void) 261 { 262 __raw_writew(0x0001, PA_POWOFF); 263 } 264 265 /* 266 * Initialize the board 267 */ 268 static void __init rts7751r2d_setup(char **cmdline_p) 269 { 270 void __iomem *sm501_reg; 271 u16 ver = __raw_readw(PA_VERREG); 272 273 printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n"); 274 275 printk(KERN_INFO "FPGA version:%d (revision:%d)\n", 276 (ver >> 4) & 0xf, ver & 0xf); 277 278 __raw_writew(0x0000, PA_OUTPORT); 279 pm_power_off = rts7751r2d_power_off; 280 281 /* sm501 dram configuration: 282 * ColSizeX = 11 - External Memory Column Size: 256 words. 283 * APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks. 284 * RstX = 1 - External Memory Reset: Normal. 285 * Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks. 286 * BwC = 1 - Local Memory Block Write Cycle Time: 2 clocks. 287 * BwP = 1 - Local Memory Block Write to Pre-Charge Delay: 1 clock. 288 * AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks. 289 * Rst = 1 - Internal Memory Reset: Normal. 290 * RA = 1 - Internal Memory Remain in Active State: Do not remain. 291 */ 292 293 sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL; 294 writel(readl(sm501_reg) | 0x00f107c0, sm501_reg); 295 } 296 297 /* 298 * The Machine Vector 299 */ 300 static struct sh_machine_vector mv_rts7751r2d __initmv = { 301 .mv_name = "RTS7751R2D", 302 .mv_setup = rts7751r2d_setup, 303 .mv_init_irq = init_rts7751r2d_IRQ, 304 .mv_irq_demux = rts7751r2d_irq_demux, 305 }; 306